在包括英国在内的许多西方国家，夫妻双方离婚前必须分居一段时间，而中国则没有此限制。

In many Western countries, including Britain, couples must separate for a period before dissolving a marriage; China has no such constraints.

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不幸的是，发达国家掌握了这方面的大部分知识，而发展中国家则没有。

Unfortunately, rich countries possess most of this knowledge, while developing countries do not.

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